Sometimes, it's the little things in life that makes the experience worth the thrill. Sure, travelling across the infinite worlds, slaying gods and saving worlds for a living never gets old, but sometimes, a certain bloodthirsty lunatic takes the time to slow down and try new things. Not necessarily challenging things, but mostly fun things. In-between jobs, our resident god killer catches news of a certain program in Japan, involving... playing soccer. Was signing up to play soccer as a superpowered, almighty force of nature completely unfair against everyone else? Obviously. Was it fun? Surprisingly so. Kids these days were crazy about "devouring", "chemical reactions", and "monsters" and whatnot. All in all, it was time to take a little break and style on some kids, purely for the fun of it all.

There stood a lone Master, the last hope for humanity, an almighty force from the beyond, fighting for the future of the world- "Yeah, yeah, can we get on with this? This cutscene doesn't give me SQ, and the gacha doesn't wait for anyone." Unfortunately, the Master in question happens to be more concerned with being a general nuisance and a menace to society rather than saving humanity. How will they save the world with such a colossal jerk as their last hope is anyone's guess.

What if the Fourth Holy Grail War had an additional Servant? What if this extra Servant was the single most overpowered jerk summonable? No, not THAT overpowered golden jerk. This one makes him look like a saint with the sheer abundance of his ego. Forming an unlikely contract with an exasperated, and not too sane, Master, the 8th Servant's arrival causes the events of the Heaven's Feel to radically change. For the better or worse? That remains to be seen. But he doesn't care about that, he'd rather disobey his Master and annoy everyone as much as physically possible.